An American lobbyist for Russian interests who helped craft an important foreign policy speech for Donald Trump has confirmed that he attended two dinners hosted by Jeff Sessions during the 2016 campaign, apparently contradicting the attorney general’s sworn testimony given this week. Sessions testified under oath on Tuesday that he did not believe he had any contacts with lobbyists working for Russian interests over the course of Trump’s campaign. But Richard Burt, a former ambassador to Germany during the Reagan administration, who has represented Russian interests in Washington, said that he could confirm previous media reports that stated he had contacts with Sessions at the time.